Anson p



(No ModelJ) A. P. THAYER.

METHOD 'OPMAKINGBARBE'D ME'TALLIQ FENCING. No. 315,085.

Patented Apr. '7, 1885.

W INVENTOR,

WITNESSES- UNITED STATES PATENT OFFICE.

- ANSON r; THAYER, or BROOKLYN, NEW YORK, ASSIG-NOR TO THOMAS w.

HALL, or SAME PLAoE.

METHOD OF MAKING,BARBED METALLIC FENCING.

SPECIFICATION forming part of Letters Patent No. 315,085, dated April 7, 1885.

A Application filed December 20, 1884. (No model.)

To all whom it may concern:

Be it known that I, ANsoN P. THAYER, a citizen of the United States, residing at Brooklyn, Kings county, New York, have invented new and useful Improvements in Methods of Making Barbed Metallic Fencing, of which the following is a specification.

This invention relates to an improved method of separating a double blank strip and forming barbs on two rods produced from the strip, said strip consisting of two parallel ribs or cores connected by a thin web of metal along which the strip is to be separated and out of which the barbs are to be formed.

The method of separating the rods and form-, ing the barbs consists of, first, slitting said web along a zigzag line, so as to form projections on each rod, containing the material for two or more barbs, and the waste to be cut away from between the barbs alternating with corresponding notches, and, second, cutting away said waste material of said projections, so as to form a barb at each end thereof, and, if desired, an intermediate barb.

The said method is distinguished from the method of Arnold,described in the Patent No. 306,313, in that by his method the projections formed in cutting thestrip apart contain the material from one barb and the waste to be cut away between said barb and another projection of the other rod, while in this case the projections are made to contain the material for two or more barbs of one rod, and the subsequent cutting of the waste material is from between the barbs made of one projection and on one and the same rod.

The dies for carrying out this method of operation may consist of two pairs of ribbed and grooved shearing-dies, the first pair being adapted to shear the blank apart along a zigzag line and from alternate notches and projections of equal length on both rods, the length. of the projections being such as to form two barbs from each projection of the required distance apart along the rod by cutting away the intermediate waste material, and the second pair of dies have ribs and grooves adapted to cut away from said projections this waste material from between the barbs of the respective rods,which are fed singly through the second dies; but said waste pieces may be cut from said projections to complete the barbs by another arrangement of dies consisting of punching-dies organized in the same machine containing the shearing-dies,and contrived to cut away the waste from both of the rods successively to the separating of the blank strip by the shearing-dies, which said arrangement constitutes the subject-matter of another application filed of even date with this, and the first described arrangement also constitutes the subject of a separate application.

In the accompanying drawings, Figure 1 is a transverse section of ablank strip to be sheared apart and barbed. Fig. 2 is a plan view of a portion of the double blank strip, showing by the full line the course along which it is to be sheared apart by the first pair of dies, and indicating by the dotted line the waste pieces that are to be cutout of theprojections by the second dies to complete the barbs. Fig. 3 is a horizontal section of the movable die and plan view of the bed-die of the first pair employed to shear the blank strip apart, with a piece of the double blank strip between then1,showing the method of shearing it apart. Fig. 4 is a horizontal section of the movable die and plan view of the bed-die of the second pair employed for cutting out the waste pieces from the projections of the separated rods, with a portion of one of the rods on the bed-die as when being cut. Fig. 5 is a side elevation of the dies and rod represented in Fig. 4. Figs.

6 and 7 are modifications of Figs. 3 and 4,- respectively. Fig. Sis a horizontal section of the movable die and plan view of the bed-die of the second pair as they may be modified when it may be preferred to cut away the waste portions of. the projections, so as to make three barbs out of one projection, with J a portion of one of the rods on the bed-die as when being cut. Fig. 9 is a horizontal section of the movable die and punches, and topview of the bed-die with a portion of the doubleblank-strip, showing the contrivance of punching-dies that may be organized, together with the shearing-dies for shearing the strip and cutting the waste from both rods successively.

First, I provide a pair of shearing-dies, a b,

having alternate ribs 0 and grooves d on one side, of like form and dimensions, and fitting together suitably to shear the blank strip apart pair of dies, h z, for cutting out the waste portions of projections g, as indicated by the dotted lines, Fig. 2, and represented in Fig. 4 by the full lines of the die-ribs j, to complete the barbs Z. These dies are ribbed and grooved on the sides also. The ribs j on the die h, and the corresponding grooves, k, in the die i, are made in suitable width, and are located the requisite distance apart to cut out the waste pieces m from theprojections gof a single rod.

In this case I have represented three dieribs, j, and corresponding grooves, k, in one pair of dies, h c,- but four is the requisite number for enabling one pair of these dies to finish the two rods sheared apart by the dies a b as fast as they are delivered from said dies, which have two die ribs and grooves to each single rod; and it will be seen that the ribs j are located sufficiently distant from each other to cut into the projections g suitably for forming a barb at each end of said projections, so that thespaces 19 between the ribs j are as Wide as one projection g and two barbs. It will also be seen that the spaces between the barbs formed by these dies vary in length, one space being as long as the projections g and the next only the length between two barbs formed in a projection g. When more barbs are formed out of each projection,the spaces between the barbs made of one projection will be still shorter.

As the dies of Fig. 3 are arranged the blank strip will be fed from end to end of said dies at each operation of the dies, and likewise the single rods across the dies of Fig. 4 at each movement; but if preferred to use both pairs of dies in greater breadth and number of ribs it may be done with correspondingly-increased feed movements, and dies at b maybe diminished in length one-half, as represented in Fig. 6, and used with shorter feed movements of the strip, while the dies h i may be diminished by two-thirds of their lengththat is to say, one rib j and its groove may be used alone, as represented in Fig. 7. The two pairs of dies will preferably be used on separate machines.

For cutting the waste from the projections 9, so as to make three barbs out of each projection, two ribs j and grooves It will be arranged to out two notches in each projection, and but for the narrow and thin-edged rib of die i, that would separate the two grooves k, they might be located close together for out v ill be fed the length ting both notches in one projection at once; but as such a thin-edged rib would wear away much faster than the rest of the die, and would be liable to crack and break off, I prefer to arrange these ribs and grooves more distant part, as represented in Fig. 8, where they are separated the distance apart of one feed movement plus the distance they would be if placed close together, as above stated, so that the two notches of the projections are cut successively. When making three barbs from the projections g, I prefer to make said projections longer than when making only two barbs therefrom, as I have represented them in Fig. 8.

For another contrivance of apparatus to separate the double blank strip and form the barbs by this same method, there may be punches consisting of the bed-die at, having as many die-sockets as the combined ribs and grooves of the shearing-dies a b and corresponding punch-dies, 0, organized together with said diesa b, as represented in Fig. 9, said punch-dies and sockets being as wide as the waste pieces to be cut from between the barbs, and being arranged the reverse of each other in respect to their oblique sides, and also arranged in due relation to the ribs and grooves 11 b, whereby they, working in unison with dies to b, cut away the waste T from the projections of both rods successively to the forming of them by said dies a b, the

method of operation being the same as here- 'in claimed; but the contrivance of the dies differs essentially from those represented in Figs 3 and 4, and is the subject of another application, as above stated.

The blank strip to be cut consists of the two ribs or cores, q, middle web, 8, and the outer flanges, t.

The dies will be suitably grooved in the faces in conformity with the shape of the ribs or cores q.

What I claim, and desire to secure by Let-Q ond, cutting away the waste material between two or more portions left remaining of each of said projections and forming barbs, substantially as described.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

ANSON P. THAYER. Witnesses:

W. J. ll/IORGAN, S. H. MORGAN.

I oo

It is hereby certified that in Letters Patent N o. 315,085, granted April 7 1885, upon the application of Anson P. Thayer, of Brooklyn, New York, for an improvement in the Method of Making Barbed Metallic Fencing, an error appears requiring the following correetion,viz: In line 29, page 1 of the printed specification, the Word from should read for; and that the Letters Patent should be read with this correction therein to make it conform to the record of the case in the Patent Office.

I Signed, conntersigned, and sealed this 21st day of April, A. D. 1885.

H. L. MULDROW, Acting Secretary of the Interior.

[SEAL] Oonntersigned:

M. V. MONTGOMERY,

Commissioner of Patents. 

